Question: Name the think tank that spent the most money in the field of social policy.
Paraphrase: Which think tank spent the most money is social policy?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q155271 . ?ent wdt:P2402 ?obj . ?ent wdt:P101 wd:Q828395 } ORDER BY DESC(?obj)LIMIT 5